Fuel carbureting means



July 13, 1948. I c, -vm 2,445,104

FUEL CARBURETING MEANS Filed Sept. 15, 1944 //V VENTOR I WW 7 6 L. Carl/"5s (Execufiw, 567573 of Char/e5 f7. Golgi, y deceased) Patented July 13, 1948 UNITED STATES PAT EN OFFICE" 2,445,104 A I 7 FUEL GARBURETING MEANS Charles M. Colvin, Wilmette,"-"Ill' John L. Corliss,

executor of; said Charles Colvin, deceased, assi'grioi to Nellie Satterfield, Lexington, Ohio stream S pt ,5 :1i1$?. .Nq-5544!? My present invention fas described in the following specifications, andillustr'at'ed in the ac companying drawings, relates to means for mixing oil and air in suitable proportions, to provide the best combustion fuel for heating furnaces,

internal combustion enginesand the like, Q;

Onelof theobjects of my present invention is to, providefa' means for mixing oil and air for combustionfuekand means for quickly andreadily adjusting. the proportionsof the mixture to em ed Another object is to provide a means for adjustingfand supplying the air in "the desired proportion, without the use of needle-valves, orother valves liable to clog and interferewith the proper .ure. With, the vabove, and Qthflobjects inv view, which will more fully appear'froin the following specification, I have described herein and illustrated one embodiment of my invention, adapted to supply mixed oil and air to heating furnaces.

In the accompanying drawings,

Fig. 1 is a front elevation of my device, having portions broken away to show some internal parts.

Fig. 2 is a section detail view of certain of the parts forming the device.

Fig. 3 is a cross-sectional view through the member 8 taken on line 3-3 of Fig. 2.

In the accompanying drawings, I represents any suitable base upon which to mount the parts shown as mounted thereon. This base may be supported by legs, as 2, 2. In this base I have provided a suitable oil tank or sump 3, 3 for holding a quantity of oil conveniently for use in the device. This oil tank 3 is connected by means of a pipe 4 with any suitable storage tank (not shown) for supplying oil to the tank 3. A floatvalve of any usual construction 5 is provided to maintain the level of oil in tank 3 at the desired level. The top of tank 3 is closed by a plate as 2| on which may be mounted the pump or blower 1. Mounted upon the base I, is an electric motor as 6, of any usual type, and preferably directed connected to the pump 1. Connected to the vacuum side of the pump is the air intake tube 8. A suitable pipe 9 extends from the oil tank 3 to the air intake tube 8, as shown, for the purpose of supplying oil from the oil tank to the vacuum side of the pump, when the device is in operation, as hereinafter described. A suitable screen or strainer as [0 is provided at the lower end of the pipe 9 to prevent foreign objects from entering the pipe and causing difficulties in the 10 provide thebest fuel as various grades ofoil are bnera on f h ot e parts. Near the upper endo he air intake tube 8 I have provided openings' as l I, llflto permit air to enter the air tube. At 'a'suitable location in theair intake tube I have provided a disk "I'2, with 'a central opening' l3 therein. This closes the air intake tubeso that air may, not pass downward through it excepting through this central opening. Atube I6 is provided to close this'opening l3, and adaptedto be moved'up and down therein, as hereinafter described. This tube I6 is provided with a slot as 45, extending above and below'the disk 12, providing, an opening above the disk l2 through which air may enter, and pass downward into the air time}. The upper end of the tube I6 is attached tothe underside of the screw cap IT, as shown.

This'cap in turn,-forms a closure for the'upper end ofthe air intake tube 8. Thecap l! is threaded internally and adapted to' screwon the threaded upper end of the air intake tube 8. A suitable pipe as 18 is provided, to carry the mixture of air and oil from the compression side of the pump to the furnace and oil burner (not shown). "20 is any convenient gauge for observation showing the pressur maintained in the P p.

The operation of my device is as follows: The motor is started, and this operates the pump. The pump sucks air in through the air intake openings II, and through the slot l5 above the disk [2, and delivers it through the slot and lower end of tube I6 into the air intake tube 8 below the disk l2. The suction of the pump also draws 011 up from the oil tank 3 through the pipe 9 into the air intake tube 8. The oil and air thus delivered to the intake tube 8 is drawn through the pump, and the action of the pump suitably mixes it, and blows it on through the pipe I8 to the burner in the furnace (not shown). To regulate the mixture. of air and oil, the cap I1 is screwed upward, or downward, as required. The higher the cap is raised, the more of the slot i5 is exposed above the disk l2, permitting more air to pass downward to the air intake tube 8. To reduce the supply of air, the cap I! is screwed downward, reducing the length of the slot [5 exposed above the disk [2, thereby reducing the. flow of air through it to the air intake tube 8.

By this construction I have supplied a simple, reliable and inexpensive device for mixing air and. oil and feeding it to a furnace. There is but one moving part, which is easily operated, and cannot possibly get clogged up or out of order. I have dispensed with all needle valves and other unreliable valves Which become clogged and stick in position. While I have shown the opening M as a slot, it could be some other shape, if desired, so long as it supplied air from above the disk l2 to below it as in the present construction.

While I have shown my device as designed for use in mixing air and oil to supply fuel for a heating furnace, it will be apparent that it could be used equally as well in connection with the fuel supply for an internal combustion engine and to otherwise mix and supply air and gas, or two separate gases, if desired.

While I have shown the construction which I consider best adapted for the purpose, it is apparent that various changes and modifications can be made in the details of construction, without departing from the spirit of my said invention. For instance, in place of the slot IA in the tube l6, one opening or a plurality of openings might be employed, with suitable means for covering part thereof at will, to accomplish a similar result. Also, the tube l6 might be omitted, and a slot, opening, or a plurality of openings be provided in the air intake tube 8, Withmeans for covering part of said slot, opening or openings at will, to accomplish a similar result.

While I have not explained the action of my device on the volume of oil drawn up into the mixture, it will be apparent that when a larger volume of air is admitted to the mixture, the suction on the oil tank is reduced, and the volume of oil drawn up into the mixture is reduced. Conversely, when the volumeof air admitted to the mixture is reduced, the suction upon the oil tank is increased, and more oil is drawn up into the mixture.

Having thus described my invention, what I claim and desire to secure by Letters Patent is the following:

In an airintake for liquid feeds for furnaces, internal combustion engines and the like, an adjustable means for regulating the amount of air admitted to said feed, said adjusting means comprising a tube having lineally extending air inlet means in at least one wall, a partition in said tube beyond said air inlet means and having a central opening, a lineally slotted tube adapted to slide up and down in said partition opening whereby to permit a larger or smaller Volume of air to enter said slotted tube at the air inlet side of said partition and being conveyed to the air intake tube at the other side of said partition, a closure cap lineally movable on said tube at the end adjacent the air inlet means and an actuating connection between said closure cap and said lineally slotted tube.

- CHARLES M. coLvIN.

REFERENCES CITED The following references are of recordin the file of this patent: I

UNITED STATES PATENTS Germany Mar. 12, 1922 

